Post-hole digger.



H. E. WBNDORF.

POST HOLE BIGGER.

APPLIGATION PILBD MAYz, 1913.

1,107,734, l Patented Aug. 18, 1914.

Z SHEETS-SHEET 1. 26

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U N'E STATES ,PATENT OFFICE.

Hen-attiene. wennen?, or LAKEMILLS, WISCONSINV POST-HOLE BIGGER.

specification of Letters Patent. Patented A1102 18, 1914.

Application filed May 2, 1913. Serial No. 765,149.

lic it known that l, llnmux E. 'nxnonif, a citiL/.cn o'l` the lfnilcd States. residing aty Lalcentilis. `n hc county of Jefferson, State ol' ii'isrontiin hanl invented certain new and uselfni improvements in losl-llole Dig gers; and l tlo hercbi declare the following to hr a fulh clear, and exact tlesrrilition of the inwntion, auch as will enable others .skilled in thc art to which it appertains to make and ust` the saine.

mhisl invention relates to post 'hole diggers and has for an object to provide a novel ntcang for raising and lowering the auger.

A further object is the provision of apost hole digger which can be constructed ol a `few simple and durable parts which will not easily gel outl ol' order.

ll'ith the above. objects in viev.' the invention conaists oi' certain novel details of con struction and combination of .parts herein alter fully described and clain'ied, it being understood that various nioLlificatir-ns ina); be inade in the. luinor detailgot coinatriaftion within the, scope of the appended claims.

ln the. accompanving drawing illustrating this inventiont-l `igurc l is a front elevation. Fifi". i). is a plan. lfifr. -i is a side cleA valion ol` the anger fcczl side of the device.

Fig. lt is a vertical section on 4---4 Fig. 1. Fig. is a side elevation slniwing the oppo- .site side of the device troni that, shown in Fig. il. Fig. (l isn horizontal sectional view on (-f-(i Fig. l.

Referring now to the drawing in which like characterbof' reference designato' siinilar parts, the inain traine of the divine is shown to compris-'f upper and lower longi tudinal sillsl ltl anal ll. .onncetefl near the curls by upper nfl lower cross sills l. and lll, and conncrted ncar tht` ends by iront and rear vertical uprights 1-'1 and 15.

pair ot guide rods lll are fixed at. the upper ends to the upperlongitudinal sills l0 and at the lower ends to tht` lower lougiw iiulinzl sills l1 in advance of the front vertical uprights il. slide. bar 1T is proiiilctl near the ends with openings 1S which oosely receive the guide rods ltl. An auger l) has thc .stein 2() turnahlwv mounted in a vertical opening formed centrally in the slide bar. there being collars and 23 on the stein above and below the slide bar to prevent vertical movement of the stem through the bar.. Upon raising and lowering ot the `sllde bar on the guide rod, the auger will be raised and lowered.

For actuating the slide bar, a transverse shaft 24 is journaled near the ends in breekets carried on top of the upper longitudinal sills 1() .and is equipped at the ends with sprocket gears 2G. Idle sprocket gears 27 are mounted on stub shafts 28 securedto the lower longitudinal sills 11 in vertical alinenient with the sprocket gears 2.6. Over each sprocket gear '26 and corresponding sprocket gear 27 is trained a sprocket chain 29,- the ends 30 of which are .connected to the ends of a bolt 31 passed transversely through the adjacent end of the slide 1;;.1 17. Upon actuation of the shaft '24 the sprocket chains on both sides of the machine will be simul taneonsly fed over their relatedA sprocket gears with a resultant raising or lowering of the slide bar horizontally, according to the direction of rotation of the shaft.

For actuating the shaft 24, a stub shaft 232 is journaled in a bracket 33 carried 0n the outer side of one of the vertical wup-A rightsl 1.4, and is also journaled in said upright, this shaft being operatively connected to the shaft 24 by means of a chain drive ill, and being actuated by a hand wheel 35 connected to the end of the shaft Outside of the bracket.

For rotating the auger, a bevel gear 3G is slidablv fitted on the auger stein by inea-ns of a projection 3T on the. gear fitting in a longitudinal groove 8S in the stein, the gear ntninallji-y bearing upon a cross arm 39 which has a central opening l() to'rereive the stein and is terminally secured to the upper longitudinal ills 10. A lnaeket 41 is secured to ont` of the upper longitudinal sills and -ter-y ininzites in a down-turned ear 4Q. A shaft 't3 is journaled on the-'bracket 41 and projects through an opening inthe ear llfthis shaft. being equipped on the outer end with a driving pulley l5, and being etuipped'on the inner end with a bevel pinion 1G which meshes with and drives the bevel gezin-#36! there-by rotating the auger. The shaft 43 is further journally supported by eyes 44 which are formed at the free ends of angular brackets 44' extendingfrom the adjacent portions of the top sill 10 and vertical upright 15. The bevel pinion bears down upon the bevel gear and holds the latter down said upon the cross arm 39 so that the auger may be raised and lowered through the bevel gear, while being;r rotated.

From the above description it will be seen that I have provided an extremely simple and durable post hole digger which is formed of a few parts that will not easily get out of order.

What is claimed, is

l. In a post hole digger, the combination with a frame, of a pair of parallel guide rods thereon, a slide/bar secured to and movable between said guide rods, feed chains on .opposite sides. of ysaid `frame connected to the ends of said bar and operating to aetuatesaid bar, andan auger revolubly fitted in said bar between and parallel with uide rods.

2. n a post hole digger, the combination with a frame, of. a pair of parallel guide rods, a transverse slide bar terminally connected to and movable longitudinally between said ,fluide rods, an auger revolubly .serured to said slide bar, a transverse shaft 'on said frame, sprockets on said shaft near Jn testimony whereof, I aiiix my signa@ ture, in .hepresence of two witnesses.

HERMAN E. W'ENDORF.

Wi tnesses E. C. BROWN, J. A. REED. 

